Fabricated pole



m25, 1829. J. mmm4 Musicman Poms" Filed April 6, 192'? i'. r A l. NIIiIWAll-III .mmHwswmmmwn 2 Shqets-heet 2 Jaln.; Kahn,

Glicine/14 Paume .lime 25,1929. y

UNITED STATES i 1,713,693 PATENT OFFICE.

JULIUS KAHN, OF YOUNGSTOWN, OHIO, ASSIGNOR TO TRUSCON STEEL COMPANY, OFYOUNGSTOWN, OHIO, A CORPORATION OF MICHIGAN.

. FABRICATED POLE.

Application led April 6, 1927. Serial No. 181,466.

This invention relates to fabricated met.

al poles, and more particularly to a pole which ta ers from'its basetowards its top.

One o the objects of the invention 1s to 5 provide a fabricated polewhose parts are effectively arranged and secured together to obtainmaximum strength and rigidity, thereby providing a pole which is strong,durable, comparatively light, and also economical to manufacture.

A further object of the invention is to provide a novel baseconstruction which may be filled with earth or the like to provide a weiht or anchor at the bottom of the 18 pole therey to firmly hold it inposition in the ground. l

With the above and other objects in view' which will more readily appearas the nature of the invention is better understood, the

to same consists in the novel construction, combination, and arrangementof parts hereinafter more fully described, illustrated and claimed.

A preferred and practical embodiment of the invention is shown in theaccompany- :ing drawings in which igure 1 is a detail view illustratingthe appheation of the invention, the pole being broken at the' center inview of its comparatively great height in proportion to its Figure 2 isan enlarged detail side elevation of the base.

Fi ure 3 is a horizontal cross section on the lme 3--3 of Figure 1.

Figure 4 is a horizontal cross section taken on the line 44 of Figure 1.y

Figures 5 and 6 are horizontal cross sectional views re ectively' takenon the lines 4o 5-5 and 6-6 o Figure 1.

l Similar vreference characters designate Vcorresponding partsthroughout the several figures of the drawings. y

In the embodiment of the invention shown 4,5 the body A of the poleconsists of a plurality of angle-iron members 1 of suitable lengtharranged with their included angles facing each other so that the outercorners 2 thereof form the corners of the completed 5o pole while themeeting side edges thereof at the top may be placed in contact andwelded together at one or more points as indicated at 3. Thus, the topportion of the pole forms a hollow rectan le and for a portion of itslengthis of uni orm width but at the point of the last weld 3, the anglemembers l begin to diverge uniformly and progressively toward the baseof the pole designated generally as B thereby to provide a tapered polestructure.l The tapering body portion A formed by the spaced anglemembers is also provided with a plurality of transverse 'battens whichare preferably metal strips welded to adjacent Hanges of the angleinembers 1, and spaced closer to each other near the ground level andfurther apart near the top of the pole.

At a point below the ground level designated by the dotted line w-fc inFigure 1, the pole is formed with a special base which is constructednot only with a view to economy of metal but to also provide a firm ande ective anchorage for the pole in the earth. This base consists of aplurality of upper plates 5 which are bowed outwardly at their medialportions and attached at their side edges to theflanges of the anglemembers. Four of .these plates are used to provide a hollow open boxportion near the top of the base, and by reason of their bowed formation.the individual members resist inward bending movement due to thepressure of the earth about the bottom of the pole. In other words, thepurpose of providing the outwardly bowed plates 5 is to prevent themfrom readily crushing in from the weight outside or when a load isapplied to the top -of the pole.

.The bottom ends of the angle members 1 are connected by the plates 6 6whose side edges are welded to one flange of adjacent angle members, andare also connected by the flanged plates 7 which are not only welded tothe outside of the angle members 1--1 as clearly shown in'Figure 5, butare also provided with the inwardly turned bot- 9 tom flanges 8 whichcover and protect the bottom ends of the angle members. These flanges 8not only serve as a retainer for earth within the relatively box-likeinclosure provided by the base structure, but also assist in preventing'penetration of the relatively sharp bottom ends of the angle membersinto the earth which might ycause the pole to sink under its own weightif it should be placed in earth which is likely to become soft or soggyunder rainy or 4similar conditions.

The u per series of plates 5 and the lower series o plates 6 and 7provide in effect l great-'width as compared with the angle vmembers 1,and said angle members between said series of plates, are connected' atall sides with the crossing brace members 9 and 10 whichA take the sidethrusts or strains imparted to the base and assist in preventing therupture of the welds which hold the an le members and plates 5, 6 and 7toget er.

When the pole is laced in the earth and the base B is also lled wit-hearth or the like, a stron and firm anchorage for the pole is provi ed.

Without further description it 1s thought that the features andadvantages of the invention will'be readily apparent to the skilledinthe art, and it will of course be understood that changes in the form,proportion and minor details of construction may be resorted to, withoutdeparting from thev spirit of the invention and scope of the ap endedclaims 1. A fabricated metal pole including angle members forming thebody of the pole, and

an anchoring base construction for the bottom of the pole, said baseconstruction comprising upper and lower relatively deep pleate members,said ulpper plate members` ing bowed outward y to resist inward pressureof the earth, and said lower plate members including relatively deepbody ortions and certain of said plate members laving inwardlyprojecting flanges extending beneath the lower ends of the angle membersto resist sinking movement of the pole, and braces connecting the anglemembers bctween said plates.

2. In a fabricated metal pole, angle lnembers forming the corners of thepole, an anchoring base -includin an up r and a lower series of s acedates, eaci plate of the upper series ieing bowed outwardly at its medialportion to resist inward ressure of the earth, and the oppositelyisposed plates of the lower series having inturned flanges at the bottomedges to resist sinking movement of the pole, and crossing brace stripsconnecting the angle members' between the plates.

In testimony whereof I hereunto aix my signature.

J ULIUS KAHN.

